Effectiveness of speed cameras in preventing road traffic collisions and related casualties: systematic review

I read this debate with interest. I know speed cameras are an emotive issue, and that can be witnessed as this discussion has escalated.

I believe the original paper was trying to assess if speed cameras are an effective safety device. Perhaps an alternative paper looking at the other side of the coin would balance out the arguement, to wit; have speed cameras inadvertently casued an increase in road deaths and serious injuries?

I have noticed that despite an increasing number of cameras, KSI statistics are up. We have had cameras for over a decade and they appear to have failed quite catastrophically.

Please try and focus on the cost in human life and injury that the cameras may have caused. Without proper randomised studies to get to the truth, the camera could be a silent killer in our midst.

I would be interested in the comments from anyone in the frontline in A&E who has any observations.

Competing interests: Programmer in a study to gather statistical data to assess the impact of differing treatment methods in trauma injury.